On 16 December 1784 – barely a year after the first crewed flight – a British cartoonist published a sketch entitled The Battle of the Balloons, depicting airships belonging to the leading powers of the day firing cannons at each other from among the clouds. In his book Falling Upwards, Richard Holmes adduces the drawing as evidence of the intimate relationship between balloons and military competition, with, for instance, the first French company of aeronauts formed on the remarkably early date of 29 March 1794. Today we might contemplate another point Holmes makes: “Balloons are also ancient and symbolic devices…